213020021210 has 8 divisors (see below), whose sum is σ = 383436038196. Its totient is φ = 85208008480.

The previous prime is 213020021191. The next prime is 213020021213. The reversal of 213020021210 is 12120020312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 199325638681 + 13694382529 = 446459^2 + 117023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (213020021213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10651001051 + ... + 10651001070.

Almost surely, 2^213020021210 is an apocalyptic number.

213020021210 is a deficient number, since it is larger than the sum of its proper divisors (170416016986).

213020021210 is a wasteful number, since it uses less digits than its factorization.

213020021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21302002128.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 213020021210 its reverse (12120020312), we get a palindrome (225140041522).

The spelling of 213020021210 in words is "two hundred thirteen billion, twenty million, twenty-one thousand, two hundred ten".